functions.php

<?php

// =============================================================================
// CONSTANTS/SETTINGS
// =============================================================================

// Version
define( 'FICTIONEER_VERSION', '5.26.0' );
define( 'FICTIONEER_MAJOR_VERSION', '5' );
define( 'FICTIONEER_RELEASE_TAG', 'v5.26.0' );

if ( ! defined( 'CHILD_VERSION' ) ) {
  define( 'CHILD_VERSION', null );
}

if ( ! defined( 'CHILD_NAME' ) ) {
  define( 'CHILD_NAME', null );
}

/*
 * Locations
 */

if ( ! defined( 'FICTIONEER_MU_REGISTRATION' ) ) {
  define(
    'FICTIONEER_MU_REGISTRATION',
    strpos( $_SERVER['REQUEST_URI'], 'wp-signup.php' ) !== false ||
    strpos( $_SERVER['REQUEST_URI'], 'wp-activate.php' ) !== false
  );
}

/*
 * Endpoints
 */

// Endpoint: OAuth 2.0
if ( ! defined( 'FICTIONEER_OAUTH_ENDPOINT' ) ) {
  define( 'FICTIONEER_OAUTH_ENDPOINT', 'oauth2' );
}

// Endpoint: EPUBs
if ( ! defined( 'FICTIONEER_EPUB_ENDPOINT' ) ) {
  define( 'FICTIONEER_EPUB_ENDPOINT', 'download-epub' );
}

// Endpoint: Logout (disable with false)
if ( ! defined( 'FICTIONEER_LOGOUT_ENDPOINT' ) ) {
  define( 'FICTIONEER_LOGOUT_ENDPOINT', 'fictioneer-logout' );
}

/**
 * Adds route to OAuth 2.0 script
 *
 * @since 4.0.0
 */

function fictioneer_add_oauth2_endpoint() {
  add_rewrite_endpoint( FICTIONEER_OAUTH_ENDPOINT, EP_ROOT );
}
add_action( 'init', 'fictioneer_add_oauth2_endpoint' );

/**
 * Adds route to ePUB script
 *
 * @since 4.0.0
 */

function fictioneer_add_epub_download_endpoint() {
  add_rewrite_endpoint( FICTIONEER_EPUB_ENDPOINT, EP_ROOT );
}
add_action( 'init', 'fictioneer_add_epub_download_endpoint' );

/*
 * Strings
 */

// String: CSS name of the primary font
if ( ! defined( 'FICTIONEER_PRIMARY_FONT_CSS' ) ) {
  define( 'FICTIONEER_PRIMARY_FONT_CSS', get_theme_mod( 'primary_font_family_value', 'Open Sans' ) );
}

// String: Display name of the primary font
if ( ! defined( 'FICTIONEER_PRIMARY_FONT_NAME' ) ) {
  define( 'FICTIONEER_PRIMARY_FONT_NAME', get_theme_mod( 'primary_font_family_value', 'Open Sans' ) );
}

// String: TTS regex (used to split text into sentences)
if ( ! defined( 'FICTIONEER_TTS_REGEX' ) ) {
  // Note: Because lookbehind assertions do not work in Safari, the script uses a little
  // detour to preserve punctuation marks: text.replace(regex, '$1|').split('|')
  define( 'FICTIONEER_TTS_REGEX', '([.!?:"\'\u201C\u201D])\s+(?=[A-Z"\'\u201C\u201D])' );
}

// String: Default list of allowed mime types for upload restrictions
define(
  'FICTIONEER_DEFAULT_UPLOAD_MIME_TYPE_RESTRICTIONS',
  'image/jpeg, image/png, image/webp, image/avif, image/gif, application/pdf, application/epub+zip, application/rtf, text/plain, image/svg+xml'
);

// String: Font Awesome CDN URL
if ( ! defined( 'FICTIONEER_FA_CDN' ) ) {
  define( 'FICTIONEER_FA_CDN', 'https://use.fontawesome.com/releases/v6.6.0/css/all.css' );
}

// String: Font Awesome CDN integrity (generated by https://www.srihash.org/)
if ( ! defined( 'FICTIONEER_FA_INTEGRITY' ) ) {
  define(
    'FICTIONEER_FA_INTEGRITY',
    'sha384-h/hnnw1Bi4nbpD6kE7nYfCXzovi622sY5WBxww8ARKwpdLj5kUWjRuyiXaD1U2JT'
  );
}

// String: Story page footer date format below 480px
if ( ! defined( 'FICTIONEER_DISCORD_EMBED_COLOR' ) ) {
  define( 'FICTIONEER_DISCORD_EMBED_COLOR', '9692513' );
}

// String: Truncation ellipsis
if ( ! defined( 'FICTIONEER_TRUNCATION_ELLIPSIS' ) ) {
  define( 'FICTIONEER_TRUNCATION_ELLIPSIS', '…' );
}

// String: Age confirmation redirect
if ( ! defined( 'FICTIONEER_AGE_CONFIRMATION_REDIRECT' ) ) {
  define( 'FICTIONEER_AGE_CONFIRMATION_REDIRECT', 'https://search.brave.com/' );
}

// String: Default chapter icon Font Awesome classes
if ( ! defined( 'FICTIONEER_DEFAULT_CHAPTER_ICON' ) ) {
  define( 'FICTIONEER_DEFAULT_CHAPTER_ICON', 'fa-solid fa-book' );
}

/*
 * Date Strings
 */

$short_date = get_option( 'fictioneer_subitem_short_date_format', 'M j' ) ?: 'M j';
$long_date = get_option( 'fictioneer_subitem_date_format', "M j, 'y" ) ?: "M j, 'y";

// String: Latest Updates shortcode list item date format
if ( ! defined( 'FICTIONEER_LATEST_UPDATES_LI_DATE' ) ) {
  define( 'FICTIONEER_LATEST_UPDATES_LI_DATE', $short_date );
}

// String: Latest Updates shortcode footer date format
if ( ! defined( 'FICTIONEER_LATEST_UPDATES_FOOTER_DATE' ) ) {
  define( 'FICTIONEER_LATEST_UPDATES_FOOTER_DATE', $long_date );
}

// String: Latest Chapters shortcode footer date format
if ( ! defined( 'FICTIONEER_LATEST_CHAPTERS_FOOTER_DATE' ) ) {
  define( 'FICTIONEER_LATEST_CHAPTERS_FOOTER_DATE', $long_date );
}

// String: Latest Stories shortcode footer date format
if ( ! defined( 'FICTIONEER_LATEST_STORIES_FOOTER_DATE' ) ) {
  define( 'FICTIONEER_LATEST_STORIES_FOOTER_DATE', $long_date );
}

// String: Story card list item date format
if ( ! defined( 'FICTIONEER_CARD_STORY_LI_DATE' ) ) {
  define( 'FICTIONEER_CARD_STORY_LI_DATE', $long_date );
}

// String: Story card footer date format
if ( ! defined( 'FICTIONEER_CARD_STORY_FOOTER_DATE' ) ) {
  define( 'FICTIONEER_CARD_STORY_FOOTER_DATE', $long_date );
}

// String: Chapter card footer date format
if ( ! defined( 'FICTIONEER_CARD_CHAPTER_FOOTER_DATE' ) ) {
  define( 'FICTIONEER_CARD_CHAPTER_FOOTER_DATE', $long_date );
}

// String: Collection card list item date format
if ( ! defined( 'FICTIONEER_CARD_COLLECTION_LI_DATE' ) ) {
  define( 'FICTIONEER_CARD_COLLECTION_LI_DATE', $long_date );
}

// String: Collection card footer date format
if ( ! defined( 'FICTIONEER_CARD_COLLECTION_FOOTER_DATE' ) ) {
  define( 'FICTIONEER_CARD_COLLECTION_FOOTER_DATE', $long_date );
}

// String: Post card footer date format
if ( ! defined( 'FICTIONEER_CARD_POST_FOOTER_DATE' ) ) {
  define( 'FICTIONEER_CARD_POST_FOOTER_DATE', $long_date );
}

// String: Page card footer date format
if ( ! defined( 'FICTIONEER_CARD_PAGE_FOOTER_DATE' ) ) {
  define( 'FICTIONEER_CARD_PAGE_FOOTER_DATE', $long_date );
}

// String: Article card footer date format
if ( ! defined( 'FICTIONEER_CARD_ARTICLE_FOOTER_DATE' ) ) {
  define( 'FICTIONEER_CARD_ARTICLE_FOOTER_DATE', $long_date );
}

// String: Story page footer date format below 480px
if ( ! defined( 'FICTIONEER_STORY_FOOTER_B480_DATE' ) ) {
  define( 'FICTIONEER_STORY_FOOTER_B480_DATE', $long_date );
}

/*
 * Integers
 */

// Integer: Default site width
if ( ! defined( 'FICTIONEER_DEFAULT_SITE_WIDTH' ) ) {
  define( 'FICTIONEER_DEFAULT_SITE_WIDTH', 960 );
}

// Integer: Commentcode expiration timer in seconds (-1 for infinite)
if ( ! defined( 'FICTIONEER_COMMENTCODE_TTL' ) ) {
  define( 'FICTIONEER_COMMENTCODE_TTL', 600 );
}

// Integer: AJAX cache TTL in milliseconds
if ( ! defined( 'FICTIONEER_AJAX_TTL' ) ) {
  define( 'FICTIONEER_AJAX_TTL', 60000 );
}

// Integer: AJAX login cache TTL in milliseconds
if ( ! defined( 'FICTIONEER_AJAX_LOGIN_TTL' ) ) {
  define( 'FICTIONEER_AJAX_LOGIN_TTL', 15000 );
}

// Integer: AJAX POST debounce rate in milliseconds
if ( ! defined( 'FICTIONEER_AJAX_POST_DEBOUNCE_RATE' ) ) {
  define( 'FICTIONEER_AJAX_POST_DEBOUNCE_RATE', 700 );
}

// Integer: Author search keyword limit (use simple text input if exceeded)
if ( ! defined( 'FICTIONEER_AUTHOR_KEYWORD_SEARCH_LIMIT' ) ) {
  define( 'FICTIONEER_AUTHOR_KEYWORD_SEARCH_LIMIT', 300 );
}

// Integer: Update check timeout
if ( ! defined( 'FICTIONEER_UPDATE_CHECK_TIMEOUT' ) ) {
  define( 'FICTIONEER_UPDATE_CHECK_TIMEOUT', 43200 ); // 12 hours
}

// Integer: Storygraph API cache TTL
if ( ! defined( 'FICTIONEER_API_STORYGRAPH_CACHE_TTL' ) ) {
  define( 'FICTIONEER_API_STORYGRAPH_CACHE_TTL', 3600 );
}

// Integer: Storygraph API number of stories per page
if ( ! defined( 'FICTIONEER_API_STORYGRAPH_STORIES_PER_PAGE' ) ) {
  define( 'FICTIONEER_API_STORYGRAPH_STORIES_PER_PAGE', 10 );
}

// Integer: Maximum number of displayed custom pages
if ( ! defined( 'FICTIONEER_MAX_CUSTOM_PAGES_PER_STORY' ) ) {
  define( 'FICTIONEER_MAX_CUSTOM_PAGES_PER_STORY', 4 );
}

// Integer: The number of chapter before and after folding in chapter lists
if ( ! defined( 'FICTIONEER_CHAPTER_FOLDING_THRESHOLD' ) ) {
  define( 'FICTIONEER_CHAPTER_FOLDING_THRESHOLD', 5 );
}

// Integer: Expiration time for shortcode Transients (0 for infinite, -1 to disable)
if ( ! defined( 'FICTIONEER_SHORTCODE_TRANSIENT_EXPIRATION' ) ) {
  define( 'FICTIONEER_SHORTCODE_TRANSIENT_EXPIRATION', 300 );
}

// Integer: Timeout between refreshes of story comment counts (0 for always)
if ( ! defined( 'FICTIONEER_STORY_COMMENT_COUNT_TIMEOUT' ) ) {
  define( 'FICTIONEER_STORY_COMMENT_COUNT_TIMEOUT', 900 );
}

// Integer: Requests per minute
if ( ! defined( 'FICTIONEER_REQUESTS_PER_MINUTE' ) ) {
  define( 'FICTIONEER_REQUESTS_PER_MINUTE', 5 );
}

// Integer: Maximum number of IDs in 'post__in' and 'post__not_in' query arguments
// to prevent performance degradation. If exceeded, the whole argument will be
// ignored in certain queries, which account for.
if ( ! defined( 'FICTIONEER_QUERY_ID_ARRAY_LIMIT' ) ) {
  define( 'FICTIONEER_QUERY_ID_ARRAY_LIMIT', 1000 );
}

// Integer: Time until a user's Patreon data expires in seconds
if ( ! defined( 'FICTIONEER_PATREON_EXPIRATION_TIME' ) ) {
  define( 'FICTIONEER_PATREON_EXPIRATION_TIME', WEEK_IN_SECONDS );
}

// Integer: Time until a cached partial expired
if ( ! defined( 'FICTIONEER_PARTIAL_CACHE_EXPIRATION_TIME' ) ) {
  define( 'FICTIONEER_PARTIAL_CACHE_EXPIRATION_TIME', 4 * HOUR_IN_SECONDS );
}

// Integer: Maximum number of cards in card cache
if ( ! defined( 'FICTIONEER_CARD_CACHE_LIMIT' ) ) {
  define( 'FICTIONEER_CARD_CACHE_LIMIT', 40 );
}

// Integer: Time until the card cache expires
if ( ! defined( 'FICTIONEER_CARD_CACHE_EXPIRATION_TIME' ) ) {
  define( 'FICTIONEER_CARD_CACHE_EXPIRATION_TIME', HOUR_IN_SECONDS );
}

// Integer: Maximum number of chapters shown on story cards
if ( ! defined( 'FICTIONEER_STORY_CARD_CHAPTER_LIMIT' ) ) {
  define( 'FICTIONEER_STORY_CARD_CHAPTER_LIMIT', 3 );
}

// Integer: Count of the query results required to be eligible for caching
if ( ! defined( 'FICTIONEER_QUERY_RESULT_CACHE_THRESHOLD' ) ) {
  define( 'FICTIONEER_QUERY_RESULT_CACHE_THRESHOLD', 50 );
}

// Integer: Maximum query results cached as Transients
if ( ! defined( 'FICTIONEER_QUERY_RESULT_CACHE_LIMIT' ) ) {
  define( 'FICTIONEER_QUERY_RESULT_CACHE_LIMIT', 50 );
}

// Integer: Limit the number of large query result cache uploads per request
if ( ! defined( 'FICTIONEER_QUERY_RESULT_CACHE_BREAK' ) ) {
  define( 'FICTIONEER_QUERY_RESULT_CACHE_BREAK', 3 );
}

/*
 * Booleans
 */

// Prevent warnings
if ( ! defined( 'WP_DEBUG' ) ) {
  define( 'WP_DEBUG', false );
}

// Boolean: Theme cache purging on post update
if ( ! defined( 'FICTIONEER_CACHE_PURGE_ASSIST' ) ) {
  define( 'FICTIONEER_CACHE_PURGE_ASSIST', true );
}

// Boolean: Theme relationship cache purging on post update
if ( ! defined( 'FICTIONEER_RELATIONSHIP_PURGE_ASSIST' ) ) {
  define( 'FICTIONEER_RELATIONSHIP_PURGE_ASSIST', true );
}

// Boolean: Menu items for search
if ( ! defined( 'FICTIONEER_SHOW_SEARCH_IN_MENUS' ) ) {
  define( 'FICTIONEER_SHOW_SEARCH_IN_MENUS', true );
}

// Boolean: Base theme switch in site settings
if ( ! defined( 'FICTIONEER_THEME_SWITCH' ) ) {
  define( 'FICTIONEER_THEME_SWITCH', true );
}

// Boolean: Attachment pages
if ( ! defined( 'FICTIONEER_ATTACHMENT_PAGES' ) ) {
  define( 'FICTIONEER_ATTACHMENT_PAGES', false );
}

// Boolean: Show OAuth ID Hashes (admin only)
if ( ! defined( 'FICTIONEER_SHOW_OAUTH_HASHES' ) ) {
  define( 'FICTIONEER_SHOW_OAUTH_HASHES', false );
}

// Boolean: Show AJAX comment submission disallowed content keys
if ( ! defined( 'FICTIONEER_DISALLOWED_KEY_NOTICE' ) ) {
  define( 'FICTIONEER_DISALLOWED_KEY_NOTICE', true );
}

// Boolean: Only allow assigned chapters in stories
// Warning: The chapter navigation always refers to the parent story!
if ( ! defined( 'FICTIONEER_FILTER_STORY_CHAPTERS' ) ) {
  define( 'FICTIONEER_FILTER_STORY_CHAPTERS', true );
}

// Boolean: Only show the full comment form after clicking into it
if ( ! defined( 'FICTIONEER_COLLAPSE_COMMENT_FORM' ) ) {
  define( 'FICTIONEER_COLLAPSE_COMMENT_FORM', true );
}

// Boolean: Storygraph API image nodes
if ( ! defined( 'FICTIONEER_API_STORYGRAPH_IMAGES' ) ) {
  define( 'FICTIONEER_API_STORYGRAPH_IMAGES', true );
}

// Boolean: Storygraph API hotlink permission
if ( ! defined( 'FICTIONEER_API_STORYGRAPH_HOTLINK' ) ) {
  define( 'FICTIONEER_API_STORYGRAPH_HOTLINK', false );
}

// Boolean: Storygraph API with chapters in /stories
if ( ! defined( 'FICTIONEER_API_STORYGRAPH_CHAPTERS' ) ) {
  define( 'FICTIONEER_API_STORYGRAPH_CHAPTERS', true );
}

// Boolean: Enable sticky cards
if ( ! defined( 'FICTIONEER_ENABLE_STICKY_CARDS' ) ) {
  define( 'FICTIONEER_ENABLE_STICKY_CARDS', true );
}

// Boolean: Enable story data meta cache
if ( ! defined( 'FICTIONEER_ENABLE_STORY_DATA_META_CACHE' ) ) {
  define( 'FICTIONEER_ENABLE_STORY_DATA_META_CACHE', true );
}

// Boolean: Order stories by last updated chapter timestamp
if ( ! defined( 'FICTIONEER_ORDER_STORIES_BY_LATEST_CHAPTER' ) ) {
  define( 'FICTIONEER_ORDER_STORIES_BY_LATEST_CHAPTER', false );
}

// Boolean: Enable tracking of chapter changes in stories
if ( ! defined( 'FICTIONEER_ENABLE_STORY_CHANGELOG' ) ) {
  define( 'FICTIONEER_ENABLE_STORY_CHANGELOG', true );
}

// Boolean: Defer scripts
if ( ! defined( 'FICTIONEER_DEFER_SCRIPTS' ) ) {
  define( 'FICTIONEER_DEFER_SCRIPTS', true );
}

// Boolean: Asynchronous loading via onload pattern
if ( ! defined( 'FICTIONEER_ENABLE_ASYNC_ONLOAD_PATTERN' ) ) {
  define( 'FICTIONEER_ENABLE_ASYNC_ONLOAD_PATTERN', true );
}

// Boolean: Whether to show the latest instead of the first chapters on story cards
if ( ! defined( 'FICTIONEER_SHOW_LATEST_CHAPTERS_ON_STORY_CARDS' ) ) {
  define(
    'FICTIONEER_SHOW_LATEST_CHAPTERS_ON_STORY_CARDS',
    get_option( 'fictioneer_show_story_cards_latest_chapters' ) ? true : false
  );
}

// Boolean: Legacy check for nav menu Transients (used by some child themes)
if ( ! defined( 'FICTIONEER_ENABLE_MENU_TRANSIENTS' ) ) {
  define(
    'FICTIONEER_ENABLE_MENU_TRANSIENTS',
    ! is_customize_preview() && ! get_option( 'fictioneer_disable_menu_transients' )
  );
}

// Boolean: Whether to show scheduled chapters in lists
if ( ! defined( 'FICTIONEER_LIST_SCHEDULED_CHAPTERS' ) ) {
  define( 'FICTIONEER_LIST_SCHEDULED_CHAPTERS', false );
}

// =============================================================================
// GLOBAL
// =============================================================================

/**
 * Provides various utility functions.
 */

require_once __DIR__ . '/includes/functions/_utility.php';

/**
 * Modify WordPress functions via hooks.
 */

require_once __DIR__ . '/includes/functions/_setup-wordpress.php';

/**
 * Cache plugins and Transients.
 */

require_once __DIR__ . '/includes/functions/_service-caching.php';

/**
 * Actions whenever a post is created or updated.
 */

require_once __DIR__ . '/includes/functions/_service-posts.php';

/**
 * Set up the theme customizer.
 */

require_once __DIR__ . '/includes/functions/_customizer.php';

if ( is_customize_preview() ) {
  require_once __DIR__ . '/includes/functions/_customizer-settings.php';
}

/**
 * Set up the theme.
 */

require_once __DIR__ . '/includes/functions/_setup-theme.php';

/**
 * Add custom post types.
 */

require_once __DIR__ . '/includes/functions/_setup-types-and-terms.php';

/**
 * Add custom shortcodes.
 */

require_once __DIR__ . '/includes/functions/_setup-shortcodes.php';

/**
 * Generate sitemap.
 */

if ( get_option( 'fictioneer_enable_sitemap' ) ) {
  require_once __DIR__ . '/includes/functions/_module-sitemap.php';
}

/**
 * Add SEO features to the site.
 */

require_once __DIR__ . '/includes/functions/_module-seo.php';

/**
 * Generate ePUBs for stories (only in ePUB context).
 */

if ( get_option( 'fictioneer_enable_epubs' ) ) {
  if ( wp_doing_ajax() && ( $_GET['action'] ?? 0 ) === 'fictioneer_ajax_download_epub' ) {
    require_once __DIR__ . '/includes/functions/_module-epub.php';
  } else {
    add_action(
      'template_redirect',
      function () {
        if ( ! is_null( get_query_var( FICTIONEER_EPUB_ENDPOINT, null ) ) ) {
          require_once __DIR__ . '/includes/functions/_module-epub.php';
        }
      },
      1
    );
  }
}

/**
 * Log-in and register via OAuth 2.0.
 */

add_action(
  'template_redirect',
  function () {
    if ( ! is_null( get_query_var( FICTIONEER_OAUTH_ENDPOINT, null ) ) ) {
      require_once __DIR__ . '/includes/functions/_module-oauth.php';
    }
  },
  1
);

/**
 * Handle comments.
 */

require_once __DIR__ . '/includes/functions/comments/_comments_controller.php'; // Used in REST
require_once __DIR__ . '/includes/functions/comments/_story_comments.php'; // Used in REST

if ( strpos( $_SERVER['REQUEST_URI'], 'wp-json/fictioneer/' ) !== false ) {
  require_once __DIR__ . '/includes/functions/comments/_comments_threads.php';
}

if ( is_admin() ) {
  // Required for comment edit
  require_once __DIR__ . '/includes/functions/comments/_comments_moderation.php';
}

if ( wp_doing_ajax() ) {
  // Required for AJAX
  require_once __DIR__ . '/includes/functions/comments/_comments_ajax.php';
  require_once __DIR__ . '/includes/functions/comments/_comments_form.php';
  require_once __DIR__ . '/includes/functions/comments/_comments_threads.php';
  require_once __DIR__ . '/includes/functions/comments/_comments_moderation.php';
}

function fictioneer_conditional_require_comments() {
  if ( comments_open() ) {
    require_once __DIR__ . '/includes/functions/comments/_comments_form.php';
    require_once __DIR__ . '/includes/functions/comments/_comments_threads.php';
    require_once __DIR__ . '/includes/functions/comments/_comments_moderation.php';
  }
}
add_action( 'wp', 'fictioneer_conditional_require_comments' );

/**
 * Add helpers for users.
 */

require_once __DIR__ . '/includes/functions/_helpers-users.php';

/**
 * Add AJAX functions for users.
 */

add_action(
  'init',
  function() {
    if ( wp_doing_ajax() ) {
      require_once __DIR__ . '/includes/functions/users/_user-ajax.php';
    }
  },
  1
);

/**
 * Add the follow feature.
 */

if ( get_option( 'fictioneer_enable_follows' ) ) {
  require_once __DIR__ . '/includes/functions/users/_follows.php';
}

/**
 * Add the reminders feature.
 */

if ( get_option( 'fictioneer_enable_reminders' ) ) {
  require_once __DIR__ . '/includes/functions/users/_reminders.php';
}

/**
 * Add the checkmarks features.
 */

if ( get_option( 'fictioneer_enable_checkmarks' ) ) {
  require_once __DIR__ . '/includes/functions/users/_checkmarks.php';
}

/**
 * Add the bookmarks feature.
 */

if ( get_option( 'fictioneer_enable_bookmarks' ) && is_admin() ) {
  // Only used for AJAX
  require_once __DIR__ . '/includes/functions/users/_bookmarks.php';
}

/**
 * Add the skins feature.
 */

if ( get_option( 'fictioneer_enable_css_skins' ) && is_admin() ) {
  // Only used for AJAX
  require_once __DIR__ . '/includes/functions/users/_skins.php';
}

/**
 * Add content helper functions.
 */

require_once __DIR__ . '/includes/functions/_helpers-templates.php';

/**
 * Add content query functions.
 */

require_once __DIR__ . '/includes/functions/_helpers-query.php';

/**
 * Add role functions.
 */

require_once __DIR__ . '/includes/functions/_setup-roles.php';

/**
 * Add API (only for REST requests).
 */

if ( get_option( 'fictioneer_enable_storygraph_api' ) ) {
  add_action(
    'rest_api_init',
    function () {
      if ( defined( 'REST_REQUEST' ) && REST_REQUEST ) {
        require_once __DIR__ . '/includes/functions/_api.php';
      }
    },
    1
  );
}

/**
 * Add search.
 */

require_once __DIR__ . '/includes/functions/_module-search.php';

/**
 * Generate SEO schema graphs.
 */

if ( get_option( 'fictioneer_enable_seo' ) && ! fictioneer_seo_plugin_active() ) {
  require_once __DIR__ . '/includes/functions/_module-schemas.php';
}

/**
 * Communicate with the Discord API.
 */

require_once __DIR__ . '/includes/functions/_module-discord.php';

// =============================================================================
// ADMIN ONLY
// =============================================================================

if ( is_admin() ) {

  /**
   * Functions only required in admin context.
   */

  require_once __DIR__ . '/includes/functions/_setup-admin.php';

  /**
   * Process AJAX form submits.
   */

  if ( wp_doing_ajax() ) {
    require_once __DIR__ . '/includes/functions/_module-forms.php';
  }

}

// =============================================================================
// DEVELOPMENT ONLY
// =============================================================================

if ( WP_DEBUG ) {
  require_once __DIR__ . '/includes/functions/_development.php';
}

// =============================================================================
// FRONTEND ONLY
// =============================================================================

if ( ! is_admin() ) {

  /**
   * Add general hooks.
   */

  require_once __DIR__ . '/includes/functions/hooks/_general_hooks.php';

  /**
   * Add post and page hooks.
   */

  function fictioneer_conditional_require_frontend_hooks() {
    if (
      is_page_template( 'stories.php' ) ||
      is_page_template( 'singular-story.php' ) ||
      is_page_template( 'singular-mirror-story.php' ) ||
      is_singular( 'fcn_story' )
    ) {
      require_once __DIR__ . '/includes/functions/hooks/_story_hooks.php';
    }

    if ( is_page_template( 'chapters.php' ) || is_singular( 'fcn_chapter' ) ) {
      require_once __DIR__ . '/includes/functions/hooks/_chapter_hooks.php';
    }

    if ( is_page_template( 'recommendations.php' ) || is_singular( 'fcn_recommendation' ) ) {
      require_once __DIR__ . '/includes/functions/hooks/_recommendation_hooks.php';
    }

    if ( is_page_template( 'collections.php' ) || is_singular( 'fcn_collection' ) ) {
      require_once __DIR__ . '/includes/functions/hooks/_collection_hooks.php';
    }

    if ( is_page_template( 'user-profile.php' ) ) {
      require_once __DIR__ . '/includes/functions/hooks/_profile_hooks.php';
    }

    if ( is_singular( 'post' ) ) {
      require_once __DIR__ . '/includes/functions/hooks/_post_hooks.php';
    }
  }
  add_action( 'wp', 'fictioneer_conditional_require_frontend_hooks' );

  /**
   * Add mobile menu hooks.
   */

  require_once __DIR__ . '/includes/functions/hooks/_mobile_menu_hooks.php';
}